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Table 4 Postoperative clinical outcomes of bilateral simultaneous TKA between Groups I and II

From: Risk factors and outcomes in asymmetrical femoral component size for posterior referencing bilateral total knee arthroplasty: a matched pair analysis

Parameter Group I Group II P value
Asymmetrical femoral component (n = 20) Symmetrical femoral component (n = 20)  
Mean Knee Society Score
 Pre-op 53.32 ± 11.63 50.30 ± 13.84 0.29
 6 weeks Post-op 78.55 ± 5.14 79.22 ± 4.55 0.53
 3 months Post-op 86.82 ± 5.69 87.50 ± 5.15 0.57
 6 months Post-op 91.95 ± 4.26 92.45 ± 4.16 0.59
 12 months Post-op 92.10 ± 4.25 92.52 ± 4.08 0.65
 24 months Post-op 92.17 ± 4.22 92.65 ± 4.02 0.60
Mean Functional Score
 Pre-op 45.5 ± 12.59 46.75 ± 10.03 0.62
 6 weeks Post-op 60.75 ± 12.38 61.25 ± 8.71 0.88
 3 months Post-op 73.25 ± 10.42 75.50 ± 8.25 0.45
 6 months Post-op 84.50 ± 6.67 85.25 ± 6.78 0.72
 12 months Post-op 84.25 ± 7.12 85.50 ± 6.47 0.56
 24 months Post-op 84.75 ± 7.15 85.75 ± 7.12 0.66
Mean Maximum Knee Flexion Difference (Each patient)
 Pre-op 5.50° ± 4.68° 4.70° ± 4.49° 0.58
 6 weeks Post-op 4.65° ± 3.76° 3.40° ± 3.59° 0.29
 3 months Post-op 3.15° ± 2.85° 2.80° ± 2.67° 0.69
 6 months Post-op 3.35° ± 4.04° 2.45° ± 2.82° 0.42
 12 months Post-op 2.70° ± 3.23° 2.25° ± 2.17° 0.62
 24 months Post-op 2.55° ± 3.02° 2.15° ± 1.93° 0.61
  1. data analyses were performed with Student’s t-test